Fostex FW 220
Thiele-Small parameters
| Nominal size | 10" |
|---|---|
| Impedance | 8 Ω |
| Fs | 29 Hz |
| Qts | 0.195 |
| Qes | 0.2 |
| Qms | 8.12 |
| Vas | 76 L |
| Sd | 284 cm² |
| Xmax | 3.7 mm |
| Re | 6.6 Ω |
| Bl | 16.4 T·m |
| Mms | 44.8 g |
| Pe | 50 W |
| Sensitivity | 92.5 dB |
Alignment hint
| EBP | 145 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 6.3 L |
EBP > 100: favours a ported (bass-reflex) alignment.
Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.
Substitute candidates
| Driver | Fs (Hz) | Qts | Vas (L) | Xmax (mm) | Sens (dB) | Fit | Notes | Compare |
|---|---|---|---|---|---|---|---|---|
| ATC PA75-234 BLCR | 27 -2 | 0.181 -0.01 | 79 +3 | 4 +0.3 | 92.3 -0.2 | close | + | |
| Volt BM2500.4 | 32 +3 | 0.213 +0.02 | 73 -3 | 6.6 +2.9 | 93.3 +0.8 | close | + | |
| ATC SB75-234 LC vp #22307 | 26 -3 | 0.169 -0.03 | 70 -6 | 3.7 = | 91.6 -0.9 | close | + | |
| Monacor SPH-250TC v2009 | 26 -3 | 0.25 +0.05 | 84 +8 | 4.5 +0.8 | 93.1 +0.6 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Monacor SPH-250TC v2011 | 26 -3 | 0.25 +0.05 | 84 +8 | 4.5 +0.8 | 93.1 +0.6 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| ATS Acoustics HG25 vp Double ferrite | 29.8 +0.8 | 0.26 +0.07 | 94.2 +18.2 | 4 +0.3 | 92.6 +0.1 | usable | + | |
| JBL LE111A | 25 -4 | 0.175 -0.02 | 101.9 +25.9 | 4.8 +1.1 | 92.9 +0.4 | usable | + | |
| Blaupunkt TSW 250 | 27 -2 | 0.259 +0.06 | 67.8 -8.2 | 5.6 +1.9 | 92.3 -0.2 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Klipsch K1089-AV | 31 +2 | 0.216 +0.02 | 106.2 +30.2 | 4.4 +0.7 | 94.8 +2.3 | usable | + | |
| Alcone AC 10 SW-4 | 28 -1 | 0.231 +0.04 | 48 -28 | 5.1 +1.4 | 92.4 -0.1 | usable | 4 Ω vs 8 Ω: amp load changes | + |
Compare the closest 3 against the FW 220 →
Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.
Used in enclosures (0)
No enclosure in the catalog uses this driver yet.